Engine



FIG. 1 is a top front perspective view of an engine showing our new design;

FIG. 2 is a bottom back perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown are included for the purpose of illustrating the unclaimed portions and form no part of the claimed design. 

CLAIM The ornamental design for an engine, as shown and described. 